Railway-tie.



D. STEVENS.

RAILWAY TIB.

APPLICATION HLED JUNE 2s, 191s.

?, Patented Dec. so, 1913.

David Stevens,

`Aat

Devin STEVENS, or SEATTLE, wAsnrNGToN.

minivan-rin.

noeaoaa Specification nf `Letters Patent.

Patented Deed@ lglt.

application filed June 26, 1913. Serial No. 775,925.

To ali whom t may conc-ern Be it known that l, DAVID STEVENS, a citizen of the United States, residing at Seattle, in the county of King and State of lVashington, have invented certain new and useful lmprovements in Railway-Ties, of which the following is a specification.

My invention relatesto railway ties and particularly to new and useful improvements on the railway tie shown in Letters Patent No. 928,480, granted to me under date of July 20, 1909.

An important object of this invention is to produce a plastic or concrete tie provided with novel means to yieldingly hold a rail in place thereon, whereby the rail may partake of perceptible vertical movements and at the same time be positively held against spreading or lateral movement.

` ,A further object ot my invention is to 'provide means of the above mentioned character, which are simple in construction, cheap to manufacture, strong and durable.

Other objects and advantages of this inventionwill be apparent during the course of the following description. i ln the accompanying drawings forming a part of this specication and in which like numerals are employed to designate like parts throughout the same, Figure 1 is a plan View of the tie complete, Fig. 2 is a side view of the same, one end portion thereof being shown in central longitudinal section, Fig. 3 is a plan View of one end of the tie, the rail and clamps being omitted, and, Fig. 4f is a transverse sectional view taken on line 4z-fl of Fig. 2, and looking in the direction of the arrows.

In the drawings, wherein for the sake of illustration, is shown a'preferred embodiment of my invention, the numeral 5 designates a cross tie which is formed of plastic material, such as concrete or the like. The

'lower portion of the plastietie 5 is reinforced by longitudinally extending metal rods 6, which are embedded therein, as shown. The upper portion of the tie 5 is reinforced by longitudinal metal rods 7, embedded therein, as shown.

Embedded within the upper portion of the tie 5 near the opposite ends thereof are spring receiving cups 8, the lower ends of which are closed by a head 9, rigidly attached thereto and extending beyond the same for providing an anchor annular flange 10, as shown. The upper reinforcing metal rods 7 are disposed adjacent and upon opposite sides ofthe cups 8 and are preferably rigidly connected thereto by any 'suitable means.l

Mounted within each of the cups 8 is a suitable stiff compressible and ex ansible coil spring 11, which is made su ciently long to extend, when expanded, upwardly beyond the cup 8, as clearly .shown in Figs. 2 and 4. Disposed upon the upper end of the coil spring 11 is a protecting clamp 12, extending transversely of the tie 5 and pron vided at its opposite ends with depending' flanges 13, which slidably engage the 4opposite sides of thetie 5, serving to prevent dirt,frain or the like from coming in contact with the lspring 11 or entering the cup 8.

:Disposedv upon the protecting plate 12 is a rail 14, which is normally held by the spring 11 slightly spaced from 4the tie 5, the upward movement of the rail being positively limited by clamps 15. These clamps are provided at their upper ends with extensions 16 which engage the vertical portion or web of the rail ll, thus positively preventing the spreading or lateral movement of the same. The clamps 15 are provided at their outer ends with laterally extending depending teeth 17, which engage upon opposite sides of the tie 5, as shown. Adjacent these depending teeth 17 the clamps 15 are provided with apertured ears 18, receiving the upper ends of vertical bolts 20, which are embedded within the material ot' the tie 5. The upper ends of the bolts 20 are screw-threaded for receiving clamping nuts 21, as shown. It is thus seen thatJ when the nuts 21 are completely screwed the clamps 15 iwill be brought into clamgiyig engagement with the tie 5 but the same will still a'ord sufficient space for the perceptible vertical movement of the rail 14 with relation to the tie, the spring 11 extending upwardly beyond the tie to normally hold the rail 14 spaced therefrom and in engagement with the clamps. lnstead of employing one suitably stii' coil spring 11, l may place one or more coil springs within each ofthe springs 11, as may be found advantageous.

It is to be understood that the form of my invention herewith shown and described is to be taken as a preferred example of the same, and that various changes in the shape, size and arrangement of parts may be reica sorted to without departing from the spirit of the invention Aor the scope ofthe subjoined claims.

Having described my invention,I claim 1. The combination with a plastic tie, of-

a spring receiving cup mounted therein, longitudinally extending metallic reinforcing means embedded within the plastic 'tie and rigidly connected with the spring'receiving cup, a suitably stiff coil spring mounted within the cup, a rail engaged by the coil spring, and means connecting the rail with t-heplastic tie.

2.. The combination with a plastic tie, provided with an upstanding recess, of a suitably stiff coil spring mounted within the recess and extending for a considerable distance outwardly of the same, a rail yieldingly supported by the coil spring, clamps disposed upon opposite sides of the ra'il and including inner rail 'engaging portions and outer tie engagingportions carrying at their ends spaced depending ears which engage upon opposite sides of the plastic tie to hold the clamps against end-wise displacement, and upstanding bolts embedded inthe plastic tie and connected with the clamps between the spaced depending ears thereof.

3. The combination with a plastic tie, of a spring receiving cup mounted within the upper portion thereof, metallicreinforcing rods embedded within the material of the plastic tie and extending longitudinally through the upper portion thereof and rigidly connected with the spring receiving v tie and' having their upper ends attached tov the clamps.

In testimony whereof I ailix my signature 1n presence of two wltnesses.

DAVID STEVENS.

Witnesses CHA's. D. THoMAs, W. A. OWEN. 

